clark



@uiten gratisairut ffir'r.

Leners Parent No. 75,369, dated armi 1o, 1868;.

`nrlrnovrn CLAMP ron sonne-BRUSHES.

ein 56mm referat trim ttm @etten ttmt mit 'mating part, nt tlg: time.

TO ALL WHOM IT MAYA CONCERN: I

Be it known that I, CHARLES B. CLARK, of the city of Buffalo, in the county of Erie,.aud State of New York, have invented a. certainnew and .useful Improvement -in Clamps for Holding scrubbing-Brushes; and I dohereby declare that thefollowing is a full and exact description thereof, reference being had to the qccompanying drawings, makingpart of this'speciication, in which- I Figure I is a central vertical section of the `clamping-collar and nut, the otherparts being shown i'n elevation.'

Figure III is n. plan of vmy improvement.

Figure III is a diagram lrepresenting a cross-section of the screw-shank, and showing the manner of preventing the' sliding collar from turning on the shank.

Like lettersof reference designate corresponding ports in .all the figures.

My improvement relates to aclamping-device, -with a long handle attachedhy which ordinary scrubbingjhrushes can held and operated by a person standing.

C D shank, and operated by a'nnt, as 'hereuftershown `an`d`descrihedf In the drawings, A represents a frame or casting, formed with a jaw, I), und a hollowinelin'ed screw-shank,

d, `for inserting a wooden handle. c is a collar sliding on the screw-shank, and providedwith arange or extended portion, s, on one side, between which and the stationary jaw'b, the brush is clamped. is a nut, provided with thumbpieces fffby which it is niade to traverse the screw-shankd, in moving the sliding collar` and clamping the brush. It will be 'perceived that the shank d, or that portion thereof on which tho collar slides, must be socast with the frame A, a's to form an acuteangle with the upper surface of the wooden stock of the brush, when applied thereto, in order to have the flange operato to clamp the brush. The lowerportion of theshank d, below the thread, is provided with n. `rib, z', which fits in a corresponding notch or groove, n, in thelinner surface o f the collar, and prevents'the latter from turning with the nut in operating the device.

- The operation of my improvement is manifest. The hrush is placed with its upper surface against the frame, so that the jaw b will he in contact with one side ofthe wooden stock, when the nut E is screwed down, sliding the'collar e, the fia-nge s of which presses against the opposite side or edge of the stock, and firmly clamps and holds it in place. i i' f By myppeculiarconstruction ofthe sliding collar and jaw, no drilling or rivets are required, which, in the manufacture of light castings, is amattcr of considerable expense, as the work is required to be donc by hand, and with great care, to avoid breaking the`parts. I can thus manufacture and put into market my improvement, at `a. much less cost than any other device for the purpose that requires drilling or other. fitting to adjust the parts to eachother.

Constructed with Iny improvement, the clamp is equally etlicient with any other, in holding the brush; is

The invention consistsin constructinv a slidinfr collar with a clampingdlange, arranged on an inclined ofa compactform; is not liable to be broken or get out of ordenes there are no projecting eurs'or other'points,

norfany rivets to'get loose and work out.

What I claim as my invention, is 4 Constructing the sliding collar c with the flange s, when arranged on the inclined. shank d, und operated by a nut, E, in the manner and for the purpose shown and described, I

' CHARLES B. CLARK.

Witnesses JAY HYATT, 'l'noms C. HoLMns. 

